1366442446631 has 16 divisors (see below), whose sum is σ = 1443578323968. Its totient is φ = 1291383475200.

The previous prime is 1366442446627. The next prime is 1366442446637.

1366442446631 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1366442446631 - 2² = 1366442446627 is a prime.

It is a super-3 number, since 3×1366442446631³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366442446631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366442446637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7733351 + ... + 7908071.

It is an arithmetic number, because the mean of its divisors is an integer number (90223645248).

Almost surely, 2^{1366442446631} is an apocalyptic number.

1366442446631 is a deficient number, since it is larger than the sum of its proper divisors (77135877337).

1366442446631 is a wasteful number, since it uses less digits than its factorization.

1366442446631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180662.

The product of its digits is 5971968, while the sum is 50.

The spelling of 1366442446631 in words is "one trillion, three hundred sixty-six billion, four hundred forty-two million, four hundred forty-six thousand, six hundred thirty-one".